Grid Branch Control for Coordinated EV Charging Load Management
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Solution Overview
Problem
Existing systems for controlling components in an electrical power grid branch lack coordinated control of multiple components connected to the same grid branch, leading to inefficient charging and supply power management, particularly for electric vehicles, which can cause high simultaneity factors and increased grid load.
Innovation Solution
The apparatus and method involve assigning communication means to components for data transmission and evaluation, allowing a control device to generate control signals based on determined parameters, enabling decentralized, coordinated control of charging or supply power across multiple components connected to the same grid branch, with a master grid branch control unit managing and prioritizing measurement data to optimize grid utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple components are connected to the same grid branch without coordinated control, then each component can operate independently, but the summary grid load increases due to high simultaneity factors
Solution Approach 1:
The patent combines multiple independent control units into a coordinated control system where control units of different components communicate with each other. The control unit of a first component receives information from the control unit of a second component, and they jointly determine control signals to optimize the summary grid load while maintaining individual charging powers.
Solution Approach 2:
The control units exchange information about their operating states and grid conditions, creating a feedback loop. Based on this feedback, the control units adjust their control signals dynamically to coordinate power distribution and reduce peak loads across the grid branch.
2Quantity of substance
If coordinated control is implemented among multiple components, then the summary grid load is optimized, but communication infrastructure and control complexity increase
Solution Approach 1:
The control system is segmented into distributed control units, each associated with a specific component. Each control unit operates semi-independently, making local decisions based on received information, which reduces the complexity of centralized control while still achieving coordinated optimization of the summary grid load.
Solution Approach 2:
The control units are designed with multi-functionality, serving both individual component control and collective grid optimization. The same control unit structure handles both local component requirements and global grid load management, reducing overall system complexity through standardization.
3Loss of time
If charging power is increased for electric vehicles, then charging time is reduced, but grid load and simultaneity factors increase
Solution Approach 1:
The control system dynamically adjusts charging power based on real-time grid conditions and the states of other connected components. Charging power is not fixed but varies over time to optimize the balance between charging speed and grid load management, allowing high power when grid capacity is available and reducing power when the summary load would become excessive.
Data Source
AI summary
An apparatus for controlling components in a grid branch of an electrical power supply grid having a grid branch control unit for limiting a load in the grid branch, containing a grid state determination device, by means of which at least one physical parameter denoting a grid state of the grid branch is determinable, a control device for generating a control signal, by means of which an electric current between the grid branch and a component connected to a connection point thereof is influencable on the basis of the grid state, wherein the components have associated communication means for sending and/or receiving data and the control device of at least one of the components evaluates the determined parameters of the multiple components and takes the evaluation result as a basis for generating the control signals of the associated components of the same grid branch.